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std::shared_ptr::unique

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Intelligente Zeiger
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Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(veraltet)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
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std::shared_ptr
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shared_ptr::shared_ptr
shared_ptr::~shared_ptr
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Modifiers
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shared_ptr::get
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shared_ptr::use_count
shared_ptr::unique
shared_ptr::operator bool
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bool unique() const;
Prüft, ob *this ist die einzige shared_ptr beispielsweise die Verwaltung des aktuellen Objekts, dh ob use_count() == 1 .
Original:
Checks if *this is the only shared_ptr instance managing the current object, i.e. whether use_count() == 1.
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Inhaltsverzeichnis

[Bearbeiten] Parameter

(None)
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(none)
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[Bearbeiten] Rückgabewert

true wenn *this ist die einzige shared_ptr beispielsweise die Verwaltung des aktuellen Objekts, false sonst .
Original:
true if *this is the only shared_ptr instance managing the current object, false otherwise.
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[Bearbeiten] Beispiel

#include <memory> 
#include <iostream> 
 
int main() 
{ 
    std::shared_ptr<int> sp1 {std::make_shared<int>(5)};
    std::cout << "sp1.unique() == " << std::boolalpha << sp1.unique() << std::endl; 
 
    std::shared_ptr<int> sp2 {sp1}; 
    std::cout << "sp1.unique() == " << std::boolalpha << sp1.unique() << std::endl; 
}

Output:

sp1.unique() == true
sp1.unique() == false

[Bearbeiten] Siehe auch

gibt die Anzahl der shared_ptr-Objekte zurück, die auf dieselbe verwaltete Objekt verweisen
(öffentliche Elementfunktion) [edit]